how to tank even though crashing?

I crash a lot because of my phone (iphone 6+ yes, apple user boooo) i know people are gonna suggest to buy a new one, but i don't have the time and quarantined too. I'm probably gonna buy a new one in a month. Is there a way to tank even though i keep crashing? I don't crash all the time though, just on big maps like hora, boss battles like venena. Within 30 mins of entering those maps i crash. My tank is currently 114 with incomplete mq. I'm afraid once i get into venena phase i won't be able to tank properly. I wanted to reset my main character that is 205 capped, but it will be useless if i still crash anyways. Any tips? or this is dead end, and i should stay as dps?

 

Bluntly speaking, don't. A disconnecting tank is just a burden.

 

menu>settings>graphics>showing other users> click "other" to turn off just try

 

In addition to above, try killing all background apps before launching toram online.

 

You can aso turn off the combat graphics of other's and have the lowest density setting for placed skills. Skills like sanctuary will be dimmed out, to lessen the burden on your device.

 

If you have pc, try using emulator to play it.