I know your pain. I started posting my comic on Webtoons back in May and have been slowly resizing all 425 pages to work over there. I'm slowly getting Webtoons caught up to what I've been posting on Tapas. Having a huge buffer of pages has made posting there pretty much stress free. I've also been able to fix text and any errors in my pages as i've been going through them, then I replace old pages here on Tapas with the fixed ones.
For views, Tapas has the most for me, but I've been on here since Oct '15. Webtoons views aren't as high, but the sub to view ratio is much higher than Tapas.
For me it's been worth it to resize everything, mostly so that I'm forcing myself to go back and fix stuff, but also it'll help when I start my patreon this month. The more exposure, the more potential backers. I only earn minimum wage, so if I can get enough people on patreon to pay the equivalent of one afternoon a week, I can use that time to focus on drawing. So, being both places is worth it.