Low fps and some freezes in raid at boss fight.

Having real issues in raid fights specially at bosses after 50%. my system runs

intel i5-10200H cpu 2.40ghz

ram 32gm

gpu rtx3060 6gb

i always play with 80 fps but when in,raid boss fps drops 5 -0-10 and all goes very very slow and some times freezes for few secs. i ve tried everything... i think.alla graphics low alla boxes unticked. running game 64 and on gpu not on integrated.only other program i have running is discord. even used the games ports on my router 9000-9100. deleted cache folder.. laptop is msi GF65 THIN 10UE. oh and when i play i have it connected on my monitor and external keyboard. Send ticket to lotro and response was search online and write in forums. I would gladly appreciate any but any recommendations or solutions or ideas . Thx