Vega 56 (Bios mod) Fluctuating core problems?

[Matty956]

Hi everyone so I've finally managed to get my Vega 56 running a 64 bios setup and running. Now the card is being cooled by a morpheus ii, temperatures all seem fine 51c Core 52c Memory, Hotspot temp is around 70-85 all monitored with Hwinfo. Now I'm running undervolt setup, P7 state at 1640mhz - 1100mv and p6 state at 1560mhz -1000mv. I've found this to be the most stable. Pushing the voltage past 1100 doesn't really give me much increase in core clock, this gives me a around 1600-1615mhz in games.

Now the problem I'm having is I only get a solid core speed in certain games? Other games such as battlefield 5 drop too anywhere around 1100 and fluctuate up to 1600, I think this is leading to low fps I'm experiencing. I get around 60-75 on battlefield Ultra settings 1080p. Really cant seem to get my head round it! I know that vega is known to downclock when certain p states aren't needed but it's kinda annoying when its causing terrible performance.

 

[eeii]

I can only comment on the tuning of my vega 64 and I could not run P7 at 1100mv. Trying giving it a gentle tickle in increments of 10MV and see how you get on. I'm currently runing 1150Mv. I have found that depending on the game I can run 1130mv on less demanding games.

 

[greatash]

What CPU? In Battlefield V the 2600 bottlenecked my V56, so I had to put it at 1440p 130% render resolution. At 1080p you should get way more fps, I get about 100~ at 1440p 135% res. At base 1440p the framerate is too high for the 2600 and it ends up hitting 95%+ usage on all cores/threads.