Why? Because scenes can get complicated, frame rates do drop. The bottleneck answer is no. Even the old i5-2500 could drive a trio of GPUs so there is no CPU to GPU bottleneck.
You either curb the settings or move up to more powerful GPUs.
Hello thank you for taking the time to read this my current setup right now is a GIGABYTE GTX 1060 G1 GAMING a AMD fx-8320 overclocked to 4 Ghz, 8GB of ddr3 ram so when im playing grand theft auto 5 with all high-ish setting my frames top out at 62 and they constantly drop down to 45 even down to 28Fps a lot of the time and its really annoying because i put $700 into this thing and its kinda disappointing i can barely run gta v so my question is, is my GTX1060 bottlenecking from my cpu and if so would i see a huge difference if i upgraded to a amd fx-9590 4.7 Ghz 8 core cpu(id overclock to 5Ghz) or would i be better off selling my amd **** and going intel

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