Try size: 640 x 640 or 512 x 768 (SD 1.5) / 1024 x 1024 or 768 x 1024 (Pony)
Weights: 0.9~1.2
Clip skip: 1
Training material from bing
Pictures from CalicoMix 8.5 and KntanMIX XLpony
(If you want to break the record, you must communicate well with the marathon pacer)