diff --git a/ggml/src/ggml-vulkan/ggml-vulkan.cpp b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
index 416ee3bd3f70a..a953c1037636f 100644
--- a/ggml/src/ggml-vulkan/ggml-vulkan.cpp
+++ b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
@@ -4916,7 +4916,7 @@ static bool ggml_vk_dim01_contiguous(const ggml_tensor * tensor) {
     return
         tensor->nb[0] == ggml_type_size(tensor->type) &&
         tensor->nb[1] == (tensor->nb[0]*tensor->ne[0])/ggml_blck_size(tensor->type) &&
-        tensor->nb[3] == tensor->nb[2]*tensor->ne[2];
+        (tensor->ne[3] == 1 || tensor->nb[3] == tensor->nb[2]*tensor->ne[2]);
 }
 
 static vk_pipeline ggml_vk_get_cpy_pipeline(ggml_backend_vk_context * ctx, const ggml_tensor * src, const ggml_tensor * dst, ggml_type to) {
@@ -10350,10 +10350,6 @@ static bool ggml_backend_vk_device_supports_op(ggml_backend_dev_t dev, const ggm
                         // If there's not enough shared memory for row_ids and the result tile, fallback to CPU
                         return false;
                     }
-                    // Check against size of shared memory variable
-                    if (op->src[2]->ne[0] > 4096) {
-                        return false;
-                    }
                 }
                 switch (src0_type) {
                     case GGML_TYPE_F32:
diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q2_k.comp b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q2_k.comp
index 157154af3a328..d4e4e6bae63df 100644
--- a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q2_k.comp
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q2_k.comp
@@ -10,7 +10,7 @@ layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
 void main() {
     [[unroll]] for (uint wgy = 0; wgy < 256; wgy++) {
         const uint i = gl_WorkGroupID.x * 256 + wgy;
-        if (i >= p.M * p.K / QUANT_K) {
+        if (i >= p.nel / QUANT_K) {
             return;
         }
 
diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q3_k.comp b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q3_k.comp
index c17dd0d999116..3661f771c745f 100644
--- a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q3_k.comp
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q3_k.comp
@@ -10,7 +10,7 @@ layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
 void main() {
     [[unroll]] for (uint wgy = 0; wgy < 256; wgy++) {
         const uint i = uint(gl_WorkGroupID.x * 256 + wgy);
-        if (i >= p.M * p.K / QUANT_K) {
+        if (i >= p.nel / QUANT_K) {
             return;
         }
 
diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q4_k.comp b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q4_k.comp
index 987f113a35ad0..1370db3654dd7 100644
--- a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q4_k.comp
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q4_k.comp
@@ -10,7 +10,7 @@ layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
 void main() {
     [[unroll]] for (uint wgy = 0; wgy < 256; wgy++) {
         const uint ib = gl_WorkGroupID.x * 256 + wgy;
-        if (ib >= p.M * p.K / QUANT_K) {
+        if (ib >= p.nel / QUANT_K) {
             return;
         }
 
diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q5_k.comp b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q5_k.comp
index 6db5403b6613e..3f3b839e11832 100644
--- a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q5_k.comp
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q5_k.comp
@@ -10,7 +10,7 @@ layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
 void main() {
     [[unroll]] for (uint wgy = 0; wgy < 256; wgy++) {
         const uint ib = gl_WorkGroupID.x * 256 + wgy;
-        if (ib >= p.M * p.K / QUANT_K) {
+        if (ib >= p.nel / QUANT_K) {
             return;
         }
 
diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q6_k.comp b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q6_k.comp
index 0b91317550f97..9cf34256e8c80 100644
--- a/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q6_k.comp
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q6_k.comp
@@ -10,7 +10,7 @@ layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
 void main() {
     [[unroll]] for (uint wgy = 0; wgy < 256; wgy++) {
         const uint i = gl_WorkGroupID.x * 256 + wgy;
-        if (i >= p.M * p.K / QUANT_K) {
+        if (i >= p.nel / QUANT_K) {
             return;
         }
         const uint tid = gl_LocalInvocationID.x;