LaTeX-Workshop: bad building performance compared to latexmk from command line

There seems to be a very big time difference between building from the latex-workshop extension compared to bare command. I have a latex file which loads some packages but isn’t extraordinary big. I don’t have any other extensions running.

If i invoke the latexmk command through the recipe interface (normal out-of-the-box build process from latex-workshop) it takes around 20 seconds to build. If i fire the same command latexmk -synctex=1 -interaction=nonestopmode -file-line-error -pdf [filename].tex from the system terminal it takes arround 5 seconds to build. If i set this command as the external build command of the extension it’s still slow. If i start the command through the terminal in vscode it’s fast agin. For all builds i tried with the same changes so i’m quite sure it has nothing to do with multiple vs single runs of pdflatex.

During the entire build process (invoked through the extension) the editor feels very sluggish, thats why i noticed in the first place.

As a workaround: is there any possibility to run an external command (for example latexmk in continuous mode from the system command line) and still trigger parsing the logs with latex-workshop to get the errors and warnings right?

LaTeX Workshop Output

output for recipe

[12:19:11] BUILD command invoked.
[12:19:11] Root file remains unchanged from: [path]/thesis.tex.
[12:19:11] Building root file: [path]/thesis.tex
[12:19:11] Build root file/thesis.tex
[12:19:11] Recipe step 1: latexmk, -synctex=1,-interaction=nonstopmode,-file-line-error,-pdf,-outdir=/ [path],-cd, [path]
[12:19:11] LaTeX build process spawned. PID: 46084.
[12:19:30] LaTeX log parsed with 1 messages.
[12:19:30] Recipe of length 1 finished. PID: 46084.
[12:19:30] Successfully built  [path]/thesis.tex.
[12:19:30] No PDF viewer connected for  [path]/thesis.pdf
[12:19:30] Parse fls file.

output for external command

[12:39:35] BUILD command invoked.
[12:39:35] Root file remains unchanged from: [path]/thesis.tex.
[12:39:35] Build using the external command: latexmk -synctex=1 -interaction=nonstopmode -file-line-error -pdf -outdir=%OUTDIR% %DOC%
[12:39:35] External build process spawned. PID: 48862.
[12:40:01] Successfully built. PID: 48862
[12:40:01] Successfully built [path]/thesis.tex.
[12:40:01] No PDF viewer connected for [path]/thesis.pdf
[12:40:01] Parse fls file.

Desktop [Required]

• OS: Fedora 31
• VS Code version: 1.41.0
• Extension version: 8.7.1
• TeX distribution version: TeX Live 2019