To help with speeding up compiling of enemies, abilities run Stress Tests

Type these into the email field on login:

grineer.outbreak – Grineer vs Infested
corpus.outbreak – Corpus vs Infested
crossfire – Grineer vs Corpus
hostile.takeover – Rathuum Executioners vs Index Brokers

make sure to not use a password example:

Email_field: grineer.outbreak
Password:

Then let it run the battle simulation for a while and compile all the abilities shaders until it's smooth, then go to down the list until you have been in all battle simulations

this will compile most of the abilities shaders in the entire game