diff --git a/ci/testnet-deploy.sh b/ci/testnet-deploy.sh
index 60de0d72f5..5b8caac7f7 100755
--- a/ci/testnet-deploy.sh
+++ b/ci/testnet-deploy.sh
@@ -49,7 +49,7 @@ Deploys a CD testnet
    -c [number]          - Number of client bencher nodes (default: $clientNodeCount)
    -u                   - Include a Blockstreamer (default: $blockstreamer)
    -P                   - Use public network IP addresses (default: $publicNetwork)
-   -G                   - Enable GPU, and set count/type of GPUs to use (e.g n1-standard-16 --accelerator count=4,type=nvidia-tesla-k80)
+   -G                   - Enable GPU, and set count/type of GPUs to use (e.g n1-standard-16 --accelerator count=2,type=nvidia-tesla-v100)
    -g                   - Enable GPU (default: $enableGpu)
    -a [address]         - Set the bootstrap fullnode's external IP address to this GCE address
    -d [disk-type]       - Specify a boot disk type (default None) Use pd-ssd to get ssd on GCE.
diff --git a/net/gce.sh b/net/gce.sh
index 01fe137d13..e819067d63 100755
--- a/net/gce.sh
+++ b/net/gce.sh
@@ -12,8 +12,8 @@ gce)
   # shellcheck source=net/scripts/gce-provider.sh
   source "$here"/scripts/gce-provider.sh
 
-  cpuBootstrapLeaderMachineType="--machine-type n1-standard-16"
-  gpuBootstrapLeaderMachineType="$cpuBootstrapLeaderMachineType --accelerator count=4,type=nvidia-tesla-k80"
+  cpuBootstrapLeaderMachineType="--machine-type n1-standard-16 --min-cpu-platform Intel%20Skylake"
+  gpuBootstrapLeaderMachineType="$cpuBootstrapLeaderMachineType --accelerator count=1,type=nvidia-tesla-p100"
   bootstrapLeaderMachineType=$cpuBootstrapLeaderMachineType
   fullNodeMachineType=$cpuBootstrapLeaderMachineType
   clientMachineType="--custom-cpu 16 --custom-memory 20GB"
@@ -23,12 +23,16 @@ ec2)
   # shellcheck source=net/scripts/ec2-provider.sh
   source "$here"/scripts/ec2-provider.sh
 
-  cpuBootstrapLeaderMachineType=m4.2xlarge
+  cpuBootstrapLeaderMachineType=c5.2xlarge
+
+  # NOTE: At this time only the p3dn.24xlarge EC2 instance type has GPU and
+  #       AVX-512 support.  The default, p2.xlarge, does not support
+  #       AVX-512
   gpuBootstrapLeaderMachineType=p2.xlarge
   bootstrapLeaderMachineType=$cpuBootstrapLeaderMachineType
   fullNodeMachineType=$cpuBootstrapLeaderMachineType
-  clientMachineType=m4.2xlarge
-  blockstreamerMachineType=m4.2xlarge
+  clientMachineType=c5.2xlarge
+  blockstreamerMachineType=c5.2xlarge
   ;;
 azure)
   # shellcheck source=net/scripts/azure-provider.sh
@@ -338,7 +342,7 @@ EOF
       # machine can be pinged...
       (
         set -o pipefail
-        for i in $(seq 1 30); do
+        for i in $(seq 1 60); do
           set -x
           cloud_FetchFile "$nodeName" "$nodeIp" /solana-id_ecdsa "$sshPrivateKey" "$nodeZone" &&
             cloud_FetchFile "$nodeName" "$nodeIp" /solana-id_ecdsa.pub "$sshPrivateKey.pub" "$nodeZone" &&
@@ -379,7 +383,7 @@ EOF
     (
       set +e
       fetchPrivateKey || exit 1
-      for i in $(seq 1 30); do
+      for i in $(seq 1 60); do
         (
           set -x
           timeout --preserve-status --foreground 20s ssh "${sshOptions[@]}" "$publicIp" "ls -l /.instance-startup-complete"
diff --git a/net/scripts/gce-provider.sh b/net/scripts/gce-provider.sh
index 69714bcf89..395194ddaa 100755
--- a/net/scripts/gce-provider.sh
+++ b/net/scripts/gce-provider.sh
@@ -163,7 +163,11 @@ cloud_CreateInstances() {
   args+=(--image $imageName)
 
   # shellcheck disable=SC2206 # Do not want to quote $machineType as it may contain extra args
-  args+=($machineType)
+  for word in $machineType; do
+    # Special handling for the "--min-cpu-platform" argument which may contain a
+    # space (escaped as '%20')...
+    args+=("${word//%20/ }")
+  done
   if [[ -n $optionalBootDiskSize ]]; then
     args+=(
       --boot-disk-size "${optionalBootDiskSize}GB"