Prime4+ slows down after some time of use

I understand your logical reasoning with this and I always appreciate and applaud such thinking-through. However, if it was software clogging up (I suspect you’re thinking of something like the old windows and Mac “memory leaks” etc then everyone around the world who’s on the same firmware version that your prime 4 is on, would all be experiencing the same behaviour that you’re seeing. As they’re all not… then it’s got to be a different cause at the root of your issues as it can’t (for the reasons outlined above) be the firmware (assuming you’re not on a really old firmware version)

So, I’m intrigued now… and I’m wondering about what you might use which maybe not lots and lots of the other users use… for example:

• Do you power anything from the usb ports on the Prime? Something which might draw more power, three hours into the night (or maybe you don’t plug it in until you’re three hours in… like charging something up iPad/iphone

• Do you run lighting from your Prime ?

• Do you record audio on your Prime 4 ?

• Do you do anything differently after 3 hours - eg: more streaming in of requests (tidal gets laggy at busier times) once the dancefloor gets going? Play shorter tracks/edits? Play longer mega mixes after 3 hours?

• more scratching after three hours?

• more use of fx after three hours?

• if you’re on wifi music streamed in, rather than local stored music , does the venue have more public (also sharing the WiFi ) after three hours ?

Also, it’s worth trying an ssd which many other users on this forum use - the Samsung - if it doesn’t have the same lags that you’re experiencing after 3 hours now, then it might be something temperature or cache based on your Crucial drive - crucial are well known of course, but who knows, they might use some sort of cache which fills up after a few hours

Some food for thought maybe

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*• Do you power anything from the usb ports on the Prime? Something which might draw more power, three hours into the night (or maybe you don’t plug it in until you’re three hours in… like charging something up iPad/iphone * No, I don’t power anything else from USB ports. I charge my phones with a regular charger designed for them.

*• Do you run lighting from your Prime ? * No, only music. I control the lighting with QLC+

*• Do you record audio on your Prime 4 ? * No

*• Do you do anything differently after 3 hours - eg: more streaming in of requests (tidal gets laggy at busier times) once the dancefloor gets going? Play shorter tracks/edits? Play longer mega mixes after 3 hours? * I usually play smaller local events/weddings. I use my own library 95% of the time. Tidal is the only one I use if someone asks for a song I don’t have in my database.

• more scratching after three hours?

*• more use of fx after three hours? * These are undemanding events, ripping songs to the beat, simple transitions on swep fx.

• if you’re on wifi music streamed in, rather than local stored music , does the venue have more public (also sharing the WiFi ) after three hours ?

I only use a local database - my SSD, and, as mentioned above, Tidal if necessary. I have my own LTE router that I use at parties; I don’t rely on Wi-Fi from party venues.

Also, it’s worth trying an ssd which many other users on this forum use - the Samsung - if it doesn’t have the same lags that you’re experiencing after 3 hours now, then it might be something temperature or cache based on your Crucial drive - crucial are well known of course, but who knows, they might use some sort of cache which fills up after a few hours

I considered this, but after contacting a Denon user, he ruled out the SSD, but pointed me to another clue: Polish characters in the song titles. I quickly built a library of English-language tracks, about 1.4k. I ran it through the DJ engine and loaded it onto the console. I’ll be testing it out. Maybe this is a clue. But it’s strange that it happens after 2-3 hours, not immediately.

*I understand your logical reasoning with this and I always appreciate and applaud such thinking-through. However, if it was software clogging up (I suspect you’re thinking of something like the old windows and Mac “memory leaks” etc then everyone around the world who’s on the same firmware version that your prime 4 is on, would all be experiencing the same behaviour that you’re seeing. As they’re all not… then it’s got to be a different cause at the root of your issues as it can’t (for the reasons outlined above) be the firmware (assuming you’re not on a really old firmware version)

I’m trying to find the cause. I posted on Denon’s Facebook forums – Polish (2.2k members) and international (28.5k members). In this official group, with 154k members, the admins haven’t approved my post for 12 hours… I wonder why?

Where I managed to post it, the response is as I expected. Many people are having a similar problem, including SC4 and SC6000 models. The main recommendation is to downgrade the firmware to 4.2.0

Whilst I agree with some of your tests and outcomes , for the reasons I’ve stated above , I can’t agree with your use of “many” in your quote above - remember some people post under different names on different social media pages - could be that 20 names on social media pages equate to 5 users mentioning the same fault in 4 places