Recently bought a 240hz monitor and in practice range I am constantly 300FPS
When I’m in a game it drops to 150-200fps
Under task manager my CPU, Memory, GPU are all around 40%
Why can’t my computer utilise more of its own resources to push for that extra fps?
SOLN: Just as an update and to close this thread, i upgraded by buying another “G.Skill DDR4-2132 (1066 MHz) Part: F4-3200C16-16GVK” and now im running OW at 300 FPS in quickplay. sometimes it drops to 290, but it no were near as erratic as before. 
Ingame, create a screen shot of your performance graph.
To show your graph, while ingame (you need to start a quick match and join) press CTRL+SHIFT+N.
After that create a screenshot every time you see a white block on top of the graph you see.
Post the screen shots somewhere and add link here.
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Yes.
I wanted to see if your problem is similar to mine.
Here is my topic:
(us . forums . blizzard . com/en/overwatch/t/major-fps-drop-since-23-jan-2018/3219)
Since few months now I am following the progression and the performance of the game and I can see that there is a problem with the game where the simulation (the white part of your graph, that is cpu and/or memory based) always goes very bad. I tested this on 7 different PCs my self and went to few friends and looked at their performance graph and i could see that even their beastly PCs have the same problem, the only difference is that their performance drop was lower.
Now do not get me wrong, there is a very high possibility that your problem is very different.
Now do you manage to get expected FPS on LOW settings while in quick match?
What components do you have? CPU, GPU, are you using SSD? Motherboard?
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Assuming you had nvidia try
- Disabling GSync which I assume your monitor has
- Disabling VSync and everything that has to do with Sync you don’t need that
- Installing vanilla drivers, not Geforce Experience, don’t need it (e.g make sure you’re running without Shadowplay)
- Disable that Windows “gaming” thing panel, don’t recall what it’s called, I disabled it the day it came out
- Make sure FPS limit is custom and 300 in video settings on OW
- Close OBS if you are using that or any sort of capture program
- Lower model scale to 75% on OW settings
Have in mind that 300 FPS is 300 FPS. I assume you’re playing at 1080p because even it most settings to low on OW, I can barely reach 300 with a 1080ti (though I play @ 1440p).
That is my FPS on low settings, (render at 75 all low)
CPU: Intel® Core™ i7-7700K CPU @ 4.20GHz
GPU: NVIDIA GeForce GTX 1070
RAM: G.Skill DDR4-2132 (1066 MHz) Part: F4-3200C16-16GVK
MOBO: MAXIMUS IX HERO
HD: NVMe Samsung SSD 960 EVO 500GB
I’ve been contemplating getting another stick of RAM, every time i try to OC it my computer bugs out but hopefully, i can work it out and have them both running close to 3200mhz which might improve the fps drops in online play.
The only real difference is to splash out 250$ on other RAM stick or just pay a little more and get a better one. Sucks because there is no guarantee anything will work.