[2019] Client makes it impossible to play certain decks.

I built a 5 color King Kenrith deck, featuring the Scuttlemutt/Faeburrow Elder synergy. It's loaded with clones to copy my elders, and it wins off of "X" cost spells like the Finales, Electrodominance, Hydroid Krasis and Kenrith himself. The only problem is, once my board starts filling up, the game slows down significantly. Tapping my Scuttlemut, and then selecting each of the colors ends up taking half the turn and it starts burn the timer down. And if I accidentally double click when i think the program didn't recognize it, that puts me back another 15 seconds cause I have to undo. Then I have to scramble to try and select the amount for my "x" spells or activate Kenrith all while continuing to get a ridiculous amount of lag. It forced me to pass the turn a few times because the timer went out.

Its a fun deck and I'd 100% play it on paper but if the client is going to punish me for playing certain decks- well... in hindsight I wish I didn't waste my wildcards.

I'm not posting this to complain, I enjoy Magic Arena. But I'm also a bit disappointed that the client isn't "combo-friendly", or whatever you call "having a lot of things to do on your turn". Is anyone else having these types of issues or is it just my computer/internet?