Thermal printer shows blury characters

I recently installed this plugin, works fine but there is an issue with the thermal printer. Acording to release notes this was fixed in = v1.1.10 -> 19 November, 2021 (**Fix:** Thermal printer text is unclear for receipt). Unfortunatelly in v1.2.4 the problem persists.
Thermal printer ticket is formatted properly but characters are displayed blury. If I perform a windows printer test there is not issue at all, so I can confirm is not a problem with the printer or drivers.
Any help would be apreciated.