G1 F12000 Exxx (retraction) freeze Marlin for 1-2 second · Issue

I played with different Cura's options and tried to enable retraction. Without success but with strange behaviors. This gcodes freeze Marlin for 1-2 seconds: G1 X78.345 Y123.734 E549.65927 G1 X79.020 Y124.063 E549.68549 G1 X115.591 Y95.3

Quality issue Marlin 2.0 and 1.1.9 // extrusion too short

Defcon 1 Marlin 1895 Rifle Thread-On Muzzle Brake - 11/16 x 24

Quality issue Marlin 2.0 and 1.1.9 // extrusion too short

FWRetract slow speeds. · Issue #9250 · MarlinFirmware/Marlin · GitHub

Leupold VX-6HD 2-12x42 CDS-ZL2 FireDot Duplex Riflescope

TOOLCHANGE_FS_LENGTH - Not retracting active tool before

Marlin Trigger Replacement Black

Firing Pin, for Benelli M2, Extended Life, by Dawson Precision

Anet ET5X Marlin 2.1 Bug Fix First Print Flexi Fish! Will it work

Understanding FIRMWARE RETRACTION G10 / G11 / G10 S1 · Issue #7597

Mark II FVXP with Scope 29200, G1BC, Chelsea