DanceNumberPost your hardware specs. It's likely your pc is too weak to run tf2 at a high frame rate even with configs.
Don't wait on Valve to fix this for you unless you want to become a skeleton who plays tf2.
But comanglias ran with 300 fps before jungle inferno now only with 30 which is weird but here are the specs
Prozesser: Intel(R) Celeron(R) CPU J3069 @ 1.60GHz 1.60 GHz
Install Ram 4.00 GB
That's basically all Windoes 10 showed me