Associate
Big frame drops are usually when your system is forced to use your pc ram as well as your gpu ram for textures etc.
What system are you running? Do you have an ssd? Are your power settings set to high performance?
I play with these... https://imgur.com/5OjdkPB on a 2500k @ 4.7 with a crappy 7950 atm, don't get any frame drops with fps @ 50 -70 fps
Don't worry about game not looking super amazing, you don't notice when playing and... loads of the top players play with low settings because it is eaiser to see someone due to the contrast between a player and the map.
Do you have enchanced pointer turned off in win 10 also?
I have a 2500k @ 4ghz with a 760 but I have the game installed on a hard drive. Tad too laggy for my liking. Will give it a go on the SSD and see how that works.