diff --git a/.github/workflows/check-full.yaml b/.github/workflows/check-full.yaml
index 5e2922e1..08a26b3d 100644
--- a/.github/workflows/check-full.yaml
+++ b/.github/workflows/check-full.yaml
@@ -18,23 +18,23 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - {os: macOS-latest,   r: '4.0',  pkgext: '.tgz'}
-          - {os: macOS-latest,   r: '4.1',  pkgext: '.tgz'}
+          #- {os: macOS-latest,   r: '4.0',  pkgext: '.tgz'}
+          #- {os: macOS-latest,   r: '4.1',  pkgext: '.tgz'}
           - {os: macOS-latest,   r: '4.2',  pkgext: '.tgz'}
           
           # seems to not build with macOS-latest and r 4.3 / next, due to issue in compiling libmetis (errors with implicit function declaration in C99 (function __GKfree)). This works on macOS-latest with other R versions.
-          #- {os: macOS-latest,   r: '4.3', pkgext: '.tgz'}
+          - {os: macOS-latest,   r: '4.3', pkgext: '.tgz'}
           #- {os: macOS-latest,   r: 'next',  pkgext: '.tgz'}
           
-          - {os: windows-latest, r: '4.0',  pkgext: '.zip'}
-          - {os: windows-latest, r: '4.1',  pkgext: '.zip'}
-          - {os: windows-latest, r: '4.2',  pkgext: '.zip'}
+          #- {os: windows-latest, r: '4.0',  pkgext: '.zip'}
+          #- {os: windows-latest, r: '4.1',  pkgext: '.zip'}
+          #- {os: windows-latest, r: '4.2',  pkgext: '.zip'}
           - {os: windows-latest, r: '4.3', pkgext: '.zip'}
           - {os: windows-latest, r: 'next',  pkgext: '.zip'}
           
           - {os: ubuntu-20.04,   r: '4.2', pkgext: '.tar.gz', rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
           - {os: ubuntu-20.04,   r: '4.3', pkgext: '.tar.gz', rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
-          - {os: ubuntu-20.04,   r: 'next',  pkgext: '.tar.gz', rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
+          #- {os: ubuntu-20.04,   r: 'next',  pkgext: '.tar.gz', rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
 
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
diff --git a/tests/testthat/testfiles/celleffecttestlinux.Rdata b/tests/testthat/testfiles/celleffecttestlinux.Rdata
new file mode 100644
index 00000000..8cb96d07
Binary files /dev/null and b/tests/testthat/testfiles/celleffecttestlinux.Rdata differ