Extremely high CPU load, interface is unresponsive

[carlosgalvezp]

Bug Description
The interface is extremely slow, taking 200% CPU load. I cannot operate with the interface to add liquidity because it just gets stuck.

Steps to Reproduce

Try to add liquidity in the Uniswap main page, connect with Metamask on the Polygon network. Moving the liquidity ranges, changing coin amounts, adding liquidity, etc. Any action takes a lot of time to perform and blows the CPU usage. Running on Ubuntu 20.04 + Chrome 99.0.4844.84.

Expected Behavior

Be able to use the Uniswap interface in a responsive manner.

[comunidadio]

Got the same issue on Optimism pool page. High CPU usage. Very unresponsive UI when changing range low or high.

[ivanmatiaspascual]

Got the same issue on Arbitrum One pool page. High CPU usage. Very unresponsive UI. After many attempts to commit the transactions, they fail.

Please raise the priority! We are blocked

[milindbl]

Same for me, barely usable for Optimism using Chrome.

[a00012025]

Same issue for Arbitrum. It seems there are so many JSON RPC requests flooding in, which makes the CPU usage very high and all operations are buggy.