closing the token list takes 1-3 seconds

[kasumi-1]

Bug Description
takes a good 1-3s to revert back to the swapping screen after clicking on a coin to change the pair

Steps to Reproduce

1. Go to swap page
2. Open token list
3. select token
4. wait...

Expected Behavior

No delay.

Additional Context

running linux, i7 8th gen, decent ping
using the latest version of chrome

opening it is ok, mostly returning back to the swap screen after selecting a token takes a while

i don't have the same problem on sushiswap so something must be going on there

[mainnet-pat]

can not reproduce