diff --git a/.github/workflows/ci-testing.yml b/.github/workflows/ci-testing.yml
index 3bfb6f2..0de328d 100644
--- a/.github/workflows/ci-testing.yml
+++ b/.github/workflows/ci-testing.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]  #, macOS-10.15, windows-2019
-        python-version: [3.7, 3.8]
+        python-version: [3.8]
         yolo5-model: ["yolov5s", "yolov5m", "yolov5l", "yolov5x"]
 
     # Timeout: https://stackoverflow.com/a/59076067/4521646
@@ -54,28 +54,20 @@ jobs:
         python -c "from utils.google_utils import * ; gdrive_download('1n_oKgR81BJtqk75b00eAjdv03qVCQn2f', 'coco128.zip')"
         mv ./coco128 ../
 
-    - name: Download weights
-      run: |
-        bash weights/download_weights.sh
-
     - name: Tests workflow
       run: |
-        # to run *.py. files in subdirectories
-        export PYTHONPATH="$PWD"
-        # define device
-        di=cpu # inference devices
+        export PYTHONPATH="$PWD"  # to run *.py. files in subdirectories
+        di=cpu # inference devices  # define device
+        
         # train
-        python train.py --weights weights/${{ matrix.yolo5-model }}.pt --cfg models/${{ matrix.yolo5-model }}.yaml --epochs 1 --img 320 --device $di --batch-size 2
-        # detect official
+        python train.py --img 256 --batch 8 --weights weights/${{ matrix.yolo5-model }}.pt --cfg models/${{ matrix.yolo5-model }}.yaml --epochs 1 --device $di
+        # detect
         python detect.py --weights weights/${{ matrix.yolo5-model }}.pt --device $di
-        # detect custom
         python detect.py --weights runs/exp0/weights/last.pt --device $di
-        # test official
-        python test.py --weights weights/${{ matrix.yolo5-model }}.pt --device $di --batch-size 1
-        # test custom
-        python test.py --weights runs/exp0/weights/last.pt --device $di  --batch-size 1
-        # inspect
-        python models/yolo.py --cfg models/${{ matrix.yolo5-model }}.yaml
-        # export
-        python models/export.py --weights weights/${{ matrix.yolo5-model }}.pt --img 640 --batch 1
+        # test
+        python test.py --img 256 --batch 8 --weights weights/${{ matrix.yolo5-model }}.pt --device $di
+        python test.py --img 256 --batch 8 --weights runs/exp0/weights/last.pt --device $di 
+        
+        python models/yolo.py --cfg models/${{ matrix.yolo5-model }}.yaml  # inspect
+        python models/export.py --img 256 --batch 1 --weights weights/${{ matrix.yolo5-model }}.pt  # export
       shell: bash