How you guys sustain T15 maps?

Ive done a few T15 and T16s but always fall back doing T12/T13 for hours cause if waystones drop it's like 80% of the time a lower tier..
Trading for them is annoying

Yes i got Atlas all Waystone nodes allocated (70% +1lvl and 38% quant)
Running all maps with 200% waystone quant round about

Alch is a must, vaaling gaurentees sustain but better hope your gear is good.

Apply delerious if you want, it helps.

Atlas needs to be setup right, especially chance for higher tier waystones, qaunt, keystone for 25% more effect of mods, more rares, more mods on rares, duplicate a rare.

Priotize making your way to boss nodes as much as possible on atlas.

Dying on a boss node rapes your progress.

Natural blue waystones regal them all and run them on naked atlas nodes. Save highest quant waystones for breech and boss nodes.

Utilize your towers (sorry minion players)

If you do like 2/3rds of this youll be fine

i also run that rare monster have +1-2 mods and that i have more rare monsters.

they also have more often t15 map drops.

league mechanic that have many rares like breach and expedition also seems to help with my map pool.

you also can skill that map bosses have higher chance to drop maps and they are also often t15.