My workspace is problem? it's so slow laggy at widget in unreal4.19 ver

my computer spec is
cpu : AMD Ryzen 7 1700 ( summit ridge )
ram : 16GB
gpu : gforce GTX1060 3GB

it was setted SSD 256GB.

when I worked in viewport or widget , it is getting more slow laggy. at first is little fast though.
what is problem?
I’m use to other IDE … eclipse or IntelliJ like that…
Eclipse is possible is able to increase memory for performence…
is it possible unreal4 ?
how do i fix it for performence is getting better ??

please let me know …