I have no idea if this is common knowledge or not, but here's some light at the end of the xfire tunnel for those that want or need it.
I've been playing about with forcing the BF4 profile in CCC (targeting acs.exe) and found that for it to work with proper usage and fps to go with it, you need to do the following things:
- Either use max reflections or switch them off entirely. Anything in between will result in texture flicker on the cars.
- Disable onscreen apps. This includes the default bottom row position display. Press F9 to remove it.
You can run the essentials app with no fps/usage drops.
Use your phone/tablet/second screen with a third party hud/dash utility if you want more info.
And that's it. Enjoy
EDIT: This workaround is generally pretty good, but it's not perfect.
You may find that usage still drops to around 50-60% with a full grid and it will likely bog down with max reflections in that situation.
In hotlap, you'll get 99% usage, or at least I do anyway.