MAMEWorld Forums - EmuChat - Re: Is Seattle.ccp not optimized?

> > Hi....running an i7 8700k @ 5.1 ghz on win 7x64 with a GTX 1050ti with a GSync
> > monitor.
> >
> > I'm having performance issues with all the Rush Games. Goes from 90% then to 109%
> > then will stay at 100 for a bit then drop to 80 then spike over 100 again, wash
> rinse
> > repeat.
> >
> > I find it hard to believe if my CPU is the issue. Is this driver problematic?
>
>
> My 9900K (5Ghz) can run the seattle games at 100% (at least I've not seen it dip
> anywhere below 60fps whilst playing).
>
> ..the later Rush games, using the Vegas hardware, will however drop down to 50-55fps
> at times, but for the most part stay at 60fps.
>
> As an experiment, try disabling Hyperthreading on the 8700K, that can boost single
> core IPC on the Intel CPU's, just to see if its any better.

Hi - I actually wanted to bump this as it’s fully solved.

I used to use Groovy Mame before its low latency option was introduced into baseline and as a Gsync user there was no more need for me to use GM so I moved to baseline. So I tried disabling the low latency option after reading it could cause issues on some games but the problem still persisted.

I downloaded the newest version of GM and all the Rush games run fine now. I even removed my OC profile which I made specifically because of this issue and I’m getting 100% still.

According to Calamity Baseline MAME uses a high precision timer and GM uses a normal one.

The high precision timer is what’s causing my issue. So I guess it’s back to GM. I had a feeling this had to do with a some sort of timing issue because like I stated previously when this issue was happening my processor was not taxed according to task manager and even with my OC removed unthrottled speed does it dip below 100 through attract mode and playing.