hello guys. I recently upgraded my gpu from gtx 560 ti to r9 380 and i was expecting huge performance increase. I still cant run gta v at 1080p with my r9 380. For fire strike i got 6813 points. My gtx 560 ti scored 2999 points. Here https://www.youtube.com/watch?v=Npx2ugLFDIo you can see this running gta v ultra 1080 with gtx 750 ti. Any ideas what might be the problem?