I’m new with GlideApps, currently building an inventory webapp.
Yesterday i upgraded to the Maker plan and for the moment all looks great except some minor inconveniences for my usecase, as it usually happens as no solution is perfect.
Apart from the minor design issues, my main concern is now about the low speed/performance of the site:
I find this discussion happening several times in the forum a few years ago (i.e people trying their site on Googe Lighthouse and reporting something just like you).
For my part, I have no problems with my app’s performance. I don’t know too much about what exactly affects these benchmark scores, but I would try reducing the amount of content your first tab contains to see if it helps.