Adobe Acrobat Pro 2020 for mac is unusable

Hi pomme-homme,

Welcome to the Apple Community.

Re: nterminable beachball hangs

Wondering which MacBook Pro model (year) you are using:

How to: Identify your MacBook Pro model - Apple Support

Seems Acrobat Pro may require more memory / storage than your Mac has available for use.

Eg Mac OS needs at least 50Gb free in order to operate smoothly.

Activity monitor on your Mac is a handy way to see which apps are using all the energy:

View energy consumption in Activity Monitor on Mac – Apple Support

NB: I'm no expert in this area, but with more complete info, others with expertise may join the discussion.

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Adobe: https://helpx.adobe.com/acrobat/system-requirements-acrobat-2020.html

says:

System requirements for Adobe Acrobat Pro 2020 (eg: on Mojave 10.14 (NB: Mojave must use 32 bit apps)

• • Intel processor
  • macOS v10.14, macOS v10.15, macOS v11‡, or macOS v12
  • Safari 10.0 or 11.0 (browser plug-in for Safari supported on 64-bit Intel processor only)
  • 2GB of RAM
  • 2.75GB of available hard-disk space
  • 1024x768 screen resolution

• • This software will not operate without activation. Internet connection and registration are required for software activation, validation of subscriptions, and access to online services.* Phone activation is not available.

macOS Mojave - Technical Specifications

says:

General Requirements

2GB of memory

12.5GB of available storage

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Does the issue persist in Safe Mode ?

(Also, sometimes issues may be resolved on return to normal use after using safe mode)

Start up your Mac in safe mode - Apple Support

How to use safe mode on your Mac – Apple Support 

All the best :-)